WO2008002065A1

WO2008002065A1 - An implant ring and dental implant using the same

Info

Publication number: WO2008002065A1
Application number: PCT/KR2007/003103
Authority: WO
Inventors: Jae-Sung Kim
Original assignee: Jae-Sung Kim
Priority date: 2006-06-27
Filing date: 2007-06-26
Publication date: 2008-01-03
Also published as: KR200425736Y1

Abstract

This invention relates to artificial teeth implanted in alveolar bone to replace missing teeth. This invention is to insert an implant ring that fits exactly to the shape and size of the narrow neck space between fixture and abutment into the narrow neck space between fixture and abutment to eliminate the narrow neck space. This invention can improve the prognosis of the dental prosthesis and prevent periodontal diseases.

Description

[DESCRIPTION] [Invention Title]

AN IMPLANT RING AND DENTAL IMPLANT USING THE SAME [Technical Field] This invention relates to dental implants, specifically to artificial teeth implanted in alveolar bone to replace missing teeth. [Background Art]

Implant is one of the dental treatments replacing missing teeth. It is comprised of a fixture made of bio-compatible material such as titanium implanted into a toothless alveolar bone and an abutment which is later connected to the fixture and covered with a crown to recover the function and appearance of a missing tooth. Implant treatments are recently widely accepted since they don't undermine neighboring tooth structure and have the same function and appearance as those of natural teeth without having dental caries. [Disclosure] [Technical Problem]

However, previous implants such as Bicon or Ankylos have a narrow neck around the connection area between fixture and abutment. The narrow connection neck area is exposed out of gingiva when the fixture is implanted higher than recommended in the alveolar bone, or when gingiva is recessed. The exposed narrow connection neck area between fixture and abutment creates problems such as food-trapping which often results in periodontal diseases. [Technical Solution]

Accordingly, the embodiments broadly described herein solve the above- mentioned problems. The purpose of the invention is to eliminate the narrow neck space in the connection area between fixture and abutment while maintaining the tightness between the fixture and abutment.

To achieve the above-mentioned purpose of the invention, according to the specification of the invention, is to insert an implant ring that fits exactly to the shape and size of the narrow neck space between fixture and abutment into the narrow neck space between fixture and abutment to eliminate the narrow neck space.

This invention is an implant ring in the form of a short circular pipe to be inserted between an abutment and a fixture of a dental implant. The implant ring is comprised of: a hole formed at a center of the implant ring so that a fastening protrusion of the abutment passes through the hole; a concave surface coming into contact with the abutment; and a flat surface coming into contact with the fixture. According to the other features of this invention an implant ring in the form of a short, circular pipe is inserted between an abutment and a fixture of the dental implant, and the implant ring comprising of: a hole formed at a center of the implant ring so that a fastening protrusion of the abutment passes through the hole; a concave surface coming into contact with the abutment; and a concave surface coming into contact with the fixture. According to the other features of this invention, this invention is an implant ring provided between a fixture inserted into and fixed in an alveolar bone and an abutment coupled to the fixture, and provided with an inner through-hole having an upper portion formed to conform to a lower portion of the abutment so that the abutment is seated on the upper portion of the through-hole. According to the other features of this invention, this invention is an implant ring provided between a fixture inserted into and fixed in an alveolar bone and an abutment coupled to the fixture, and provided with an inner through-hole having a lower portion of the through-hole is formed to conform to an upper portion of the fixture so that the lower portion of the through-hole is seated on the upper portion of the fixture. Downwardly and gradually inclined round surfaces are formed at a lower portion of the abutment, and a lower end of the abutment is formed with a fastening protrusion that is inserted into and fixed in the fastening recess of the fixture. The implant ring as mentioned above is made of a biocompatible material such as gold, silver, titanium, dental alloys, ceramics, reinforced synthetic resin. When a gum covers an upper end of the fixture, the implant ring is provided with a through-hole having an upper portion formed to conform to the round surface of the abutment, and a lower end of the implant ring is formed to be flat so that the lower end comes into close contact with a top surface of a gum covering an upper end of the fixture.

When the upper end of the fixture is exposed out of the recessed gum, the implant ring is formed to occupy a space between the round surface of the abutment and the taper surface of the fixture. The upper portion and a lower portion of the through-hole are formed to conform to the round surface and the taper surface, respectively. [Advantageous Effects]

The invention of an implant ring and dental implant using the same is expected to have advantages as follows.

In this invention, an implant ring is inserted between a fixture and an abutment to eliminate the narrow neck space of the connection area of the fixture and the abutment. Therefore, it can prevent food-trapping problems reducing periodontal diseases.

This invention also can repair and improve the implant prosthesis by inserting an implant ring into the exposed connection neck area between a fixture and an abutment out of a recessed gum after implant surgery. [ Description of Drawings ]

The above and other objects, features and advantages of the embodiments as broadly described herein will become more apparent from the following detailed description taken in conjunction with the drawings, in which:

Fig 1 shows the dental implant ring of the first application case in the lateral perspective view of disassembled parts of dental implants.

Fig 2 shows the dental implant ring of the first application case in the longitudinal cross sectional view of the assembled parts of the invention.

Fig 3 shows the dental implant ring of the first application case in a plane figure.

Fig 4 shows the dental implant ring of the second application case in the lateral view of disassembled parts of the dental implants.

Fig 5 shows the invention of the second application case in the longitudinal cross sectional view of the assembled parts of the dental implants.

[Best Mode]

The implant ring and dental implant of the first application case will be fully explained referring to the attached drawings:

Fig 1 shows the dental implant ring in the lateral perspective view of disassembled parts of dental implants, Fig 2 shows the dental implant ring in the longitudinal cross sectional view of the assembled parts of the invention and Fig 3 shows an implant ring in a plane figure.

As specified in the above figures, the dental implant in this invention is largely made up of fixture(lθ) which is planted in alveolar bone and abutment(20) which is connected to the top part of fixture(lθ) to support the artificial tooth and implant ring(30) which is inserted between fixture(lθ) and abutment(20)

Fixture(lO) is an artificial root planted and fixed in the alveolar bone. In this application case, threads are formed on an outer peripheral surface of fixture(lθ) to increase the binding force with alveolar bone. The upwardly inclined taper surface(l l) is formed at the upper portion of the fixture(lθ). As in Figure 1, the top part of the fixture(lθ) forms a convex shape due to the inclined taper surface(l l). A fastening recess(13) is formed at the upper portion of the fixture(10 so that the recess penetrates through an inner region of the upper portion of the fixture.

Abutment(20) is coupled to the fixture and installed so as to protrude into an oral cavity to support the artificial tooth or teeth. Dental prosthesis(crown) covers the outside surface of the abutment. A downwardly and gradually inclined round surface(21) is formed at a lower portion of the abutment(20). The lower portion of the abutment(20) has a convex shape due to the inclined round surface(21). The lower end of the abutment is formed with a fastening protrusion(23) inserted into and fixed in the fastening recess(13) of the fixture(lθ). A screw connection can be utilized instead of the connection between the fastening protrusion(23) and the fastening recess(13).

An implant ring(30) is inserted between the fixture and the abutment. A hole is formed at a center of the implant ring so that a fastening protrusion of the abutment passes through the hole. The upper part of the through-hole(32) has a conforming contact area(35) to the round surface(21) of the abutment(20). The conforming contact area has a corresponding shape with the round surface(21) of the abutment(20) for a tight contact. And The lower of the implant ring(30) is formed to be flat so that the lower end comes into close contact with an upper end of the fixture( 10).

The implant ring(30) of the first application case can be utilized when the gum covers the upper end of the fixture(lθ). Therefore, in this application, the lower part of the implant ring(30) has a flat surface so that the whole flat surface can be in contact with the gum. On the other hand, the implant ring is made of a bio-compatible material gold, silver, titanium, dental alloys, ceramics, reinforced synthetic resin. The implant ring and dental implant using the second application case will be fully explained referring to the attached drawings:

Fig 4 shows the dental implant of the second application in the lateral perspective view of its disassembled parts , Fig 5 shows the dental implant of the second application in the longitudinal cross sectional view of its assembled parts. Parts in the second application of the invention are numbered in 100^th corresponding to the 2 digit numbers of the first application. Fixture(l lO) and abutment(120) has the same corresponding features with those of the invention of the first application and their description of the first application of the invention will substitute with that of the second application.

As specified in the above figures, the dental implant in this invention is largely made up of 3 parts; fixture(l 10) which is planted in alveolar bone, abutment(120) which is connected to the top part of fixture(l lθ) to support artificial tooth, and implant ring(130) which is inserted between fixture(l 10) and abutment(l 20).

An implant ring(130) is inserted between the fixture and the abutment. It fills the space where abutment(120) and fixture(l lθ) connect. More specifically, it fills the space between the tapered surface(l l l) of the fixture(l lθ), and the round surface(121) of the abutment(120). A through-hole(132) is formed at the center of the implant ring(130). The upper part of the through-hole(132) has a conforming contact area(135) to the round surface(121) of the abutment(120). The conforming contact area(135) has a corresponding shape with the round surface(121) of the abutment(120) for a tight contact. The upper part of the fixture(l lθ) is inserted into the lower end of the implant ring. At this time, the lower part of the through-hole(132) has a tight contact surface(137) with the tapered surface(lll) of the fixture for a close contact. Therefore, the tight contact surface(137) has a conforming shape with the tapered surface(l 11) of the fixture(l 10).

The through-hole(132) forms a middle area(139) between two tight contact areas(135) and (137) on its two ends which has a tight contact with a fastening protrusion(125) of the abutment(120). The implant ring(130) of the first application case can be utilized when the gum recedes, exposing the entire connection area of the fixture(l lθ) and abutment(120). Therefore, in this application, the lower part of the implant ring(130) covers the upper part of the fixture(l lθ) filling the space between the fixture(l lθ) and the abutment(120). It is recommended that the implant ring be made of a bio-compatible material such as gold, silver, titanium, dental alloys, ceramics, or reinforced synthetic resin.

The right of this invention is not only limited to the above explained application cases, but also defined by the following claims by which it is evident that anybody has common knowledge in the field of this invention can have variations and renewals of the invention.

[Industrial Applicability]

As described above, this invention can improve the prognosis of the dental prosthesis and prevent periodontal diseases.

Claims

[CLAIMS] [Claim 1 ]

An implant ring in the form of a short circular pipe to be inserted between an abutment and a fixture of a dental implant, the implant ring comprising of: a hole formed at a center of the implant ring such that a fastening protrusion of the abutment passes through the hole; a concave surface coming into contact with the abutment; and a flat surface coming into contact with the fixture.

[Claim 2]

An implant ring in the form of a short, circular pipe to be inserted between an abutment and a fixture of a dental implant, the implant ring comprising of: a hole formed at a center of the implant ring so that a fastening protrusion of the abutment passes through the hole; a concave surface coming into contact with the abutment; and a concave surface coming into contact with the fixture.

[Claim 3]

An implant ring provided between a fixture inserted into and fixed in an alveolar bone and an abutment coupled to the fixture, and provided with an inner through-hole having an upper portion formed to conform to a lower portion of the abutment so that the abutment is seated on the upper portion of the through-hole.

[Claim 4]

The implant ring, as claimed in claim 3, wherein a lower portion of the through- hole is formed to conform to an upper portion of the fixture so that the lower portion of the through-hole is seated on the upper portion of the fixture.

[Claim 5]

The implant ring as claimed in claim 4, wherein the implant ring is made of a biocompatible material such as gold, silver, titanium, dental alloys, ceramics, reinforced synthetic resin.

[Claim 6]

A dental implant comprising of: a fixture inserted into and fixed in an alveolar bone; an abutment coupled to the fixture and installed to protrude into an oral cavity; and an implant ring formed to conform to a connection portion between the fixture and the abutment and inserted into and brought into close contact with the connection portion.

[Claim 7]

The dental implant as claimed in claim 6, wherein threads are formed on an outer peripheral surface of the fixture, an upwardly inclined taper surface is formed at an upper portion of the fixture, and a fastening recess is formed at the upper portion of the fixture such that the recess penetrates through an inner region of the upper portion of the fixture. [Claim 8]

The dental implant as claimed in claim 7, wherein a downwardly and gradually inclined round surface is formed at a lower portion of the abutment, and a lower end of the abutment is formed with a fastening protrusion inserted into and fixed in the fastening recess of the fixture. [Claim 9]

The implant ring as claimed in claim 8, wherein the implant ring is made of a biocompatible material such as gold, silver, titanium, dental alloys, ceramics, reinforced synthetic resin. [Claim 10]

The implant ring as claimed in claim 9, wherein the implant ring is provided with a through-hole having an upper portion formed to conform to the round surface of the abutment, and a lower end of the implant ring is formed to be flat so that the lower end comes into close contact with a top surface of a gum covering an upper end of the fixture. [Claim 11]

The implant ring as claimed in claim 9, wherein the implant ring is formed to occupy a space between the round surface of the abutment and the taper surface of the fixture, and the upper portion and a lower portion of the through-hole are formed to conform to the round surface and the taper surface, respectively.